Allow to specify the location to generate Route Module types

[khabubuphathu]

Problem

Currently, the Type Safety CLI in React Router does not provide an option to specify the location where the Route Module types should be generated. This limitation can lead to inconvenience for developers who may be using a monorepo and have specific package for types that they would like to share with other packages. Limiting developers to rely of the no typesafe option of ActionFunctionArgs and LoaderFunctionArgs

Solution

Introduce a new option in the Type Safety CLI that allows developers to specify the directory where the Route Module types should be generated. This option can be added as a command-line argument or a configuration setting in Vite plugin

Implementation

1. Command-Line Argument: Add a new argument to the Type Safety CLI command, e.g., --types-dir, to specify the directory for generated types.
2. Vite Plugin File: Allow the directory to be specified in the project's configuration file, e.g., vite.config.ts, under a new property like typesDir.

Example Usage

# Using command-line argument
react-router typegen --types-dir ../../packages/types

// vite.config.ts
export default defineConfig({
  plugins: [
    reactRouter({
      typesDir: "../../packages/types"
    })
  ],
});